Light string



FIG. 1 is a front perspective view of a light string, showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The light string is shown with multiple symbolic breaks along its length. The dash-dot-dot-dash broken lines shown in the drawings are for illustrating the symbolic break only. The appearance of any portion of the article between the break lines forms no part of the claimed design. 

CLAIM The ornamental design for a light string, as shown and described. 